Storage file read/write problem [fixed]

Good morning!

I must be completely blind or dumb in a different way, but when I write a string into a file, read it back into another string and then compare both strings with "!==", they are reported as different!

Then, if I compare them character by character, no difference is found (as expected).

Does anybody have a solution for this puzzle?

The gist may be directly loaded and run on a connected watch through the IDE. Here comes the code:

const Storage = require('Storage');

function compareStrings (Original,Candidate) {
  let OriginalLength  = Original.length;
  let CandidateLength = Candidate.length;

  if (CandidateLength > OriginalLength) {
    print('>>>> more characters read than written');
    print('>>>> first additional character: ' + Candidate.charCodeAt(OriginalLength));
    return;
  }

  if (CandidateLength < OriginalLength) {
    print('>>>> less characters read than written');
    print('>>>> first missing character: ' + Original.charCodeAt(CandidateLength));
    return;
  }

  for (let i = 0; i < OriginalLength; i++) {
    if (Original[i] !== Candidate[i]) {
      print('>>>> different characters read than written');
      print('>>>> first mismatch at #' + i + ': expected ' + Original.charCodeAt(i) + ', got ' + Candidate.charCodeAt(i));
      return;
    }
  }

  print('>>>> same characters read as written');
}

const FileContent_1 = 'this file exists for testing purposes only';
const FileContent_2 = 'this file still exists for testing purposes only';

if (Storage.write('4testing',FileContent_1)­) {
  print('file "4testing" was successfully created');
} else {
  print('file "4testing" could not be written');
}

if (Storage.read('4testing') !== FileContent_1) {
  print('contents of file "4testing" do not look as expected');
  print('(namely "' + Storage.read('4testing') + '")');
  compareStrings(FileContent_1,Storage.rea­d('4testing'));
}

if (Storage.write('4testing',FileContent_2)­) {
  print('file "4testing" was successfully overwritten');
} else {
  print('file "4testing" could not be overwritten');
}

if (Storage.read('4testing') !== FileContent_2) {
  print('contents of file "4testing" do no longer look as expected');
  print('(namely "' + Storage.read('4testing') + '")');
  compareStrings(FileContent_2,Storage.rea­d('4testing'));
}

Storage.erase('4testing');
print('file "4testing" has finally been deleted');